Question by Chocolade · May 02, 2017 at 12:41 PM · c#unity 5 scripting problem script.

The spaceship acceleration script is good ? And how to use it with engine ?

In the script i click on the key Z to rotate the spaceship and on P to accelerate.

In the spaceship there is a Rigidbody component both Use Gravity and Is Kinematic are set to false turned off.

I wonder if the acceleration part is real enough for spaceship ? I also can't figure out how to make that when i keep clicking on P it will increase the acceleration ? Do i need to use the Editor: Edit > Project Settings > Input for controlling the spaceship or i can do it with keys like i'm doing now using Z and P ?

Whats is the acceleration and thrust variables does ? I mean what each one do ? they are not the same i guess.

And i have an engine object i attach it as child under the spaceship and position it in the back of the spaceship. How can i combine the engine with the script so when i click/press the P key it will also increase/decrease the engine power ?

 using UnityEngine;
 using System.Collections;
 
 public class Control : MonoBehaviour
 {
     public int rotationSpeed = 75;
     public int movementspeed = 10;
     public int thrust = 10;
 
     private bool isPKeyDown = false;
     private float acceleration = .0f;
     private Vector3 previousPosition = Vector3.zero;
     private Rigidbody _rigidbody;
 
     // Use this for initialization
     void Start()
     {
         _rigidbody = GetComponent<Rigidbody>();
         Debug.Log("Acc Speed: " + thrust);
     }
 
     // Update is called once per frame
     void Update()
     {
 
         var v3 = new Vector3(Input.GetAxis("Vertical"), Input.GetAxis("Horizontal"), 0.0f);
         transform.Rotate(v3 * rotationSpeed * Time.deltaTime);
         transform.position += transform.forward * Time.deltaTime * movementspeed;
 
         if (Input.GetKey(KeyCode.Z))
             transform.Rotate(Vector3.forward * rotationSpeed * Time.deltaTime);
 
         if (Input.GetKey("p"))
         {
             isPKeyDown = Input.GetKey("p");
             float distance = Vector3.Distance(previousPosition, transform.position);
             acceleration = distance / Mathf.Pow(Time.deltaTime, 2);
 
             previousPosition = transform.position;
             _rigidbody.AddRelativeForce(0f, 0f, thrust, ForceMode.Acceleration);
         }
     }
 
     void OnGUI()
     {
         if (isPKeyDown)
         {
             GUI.Label(new Rect(100, 100, 200, 200), "Acc Speed: " + acceleration);
         }
     }
 }

This is a screenshot of the Engine after i added it to the back of the spaceship and on the right the Engine properties in the Inspector.

Spaceship with engine